Among the red canister variety of gelatin, there are yet even more decisions to be made! You have two options: kosher or porcine. Kosher meaning, pig-free and from cows only, and porcine which is primarily from pig parts (hide and bones).
A parallel port is an interface allowing a personal computer (PC) to transmit or receive data down multiple bundled cables to a peripheral device such as a printer. The most common parallel port is a printer port known as the Centronics port.
When a PC wants to send data to a printer, it sends it either through a parallel port, a serial port or a network connection. When using a parallel port, the computer sends the data 1 byte at a time (8 bits in parallel, as opposed to 8 bits serially as in a serial port). With each byte sent out, it sends a handshaking signal so the printer can latch the byte.